Braine, L. G. (1972). A developmental analysis of the effect of stimulus orientation on recognition. American Journal of Psychology, 85(2), 157-188.

Subjects of various ages were tachistoscopically shown geometric figures that had a distinguishing cue at one end, and at the other end, a "focal" feature that determines the apparent upright for young children. The orientation facilitating recognition changed with age; a developmental change in the starting position of a serial-processing mechanism is proposed.